11151-3929 SEE 128 (HD 97881)
11h 15m 08.57s -39° 28' 37.0" P.A. 21.00 sep 0.2 mag 7.80,7.90 Sp A2V dist. 471.7 pc (1538.69 l.y.)
| Coord 2000 |
11151-3929 |
|
Discov num |
SEE 128 |
|
Comp |
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Coord arcsec 2000 |
11 15 08.57 -39 28 37.0 |
|
| Date first |
1930 |
|
Date last |
2018 |
|
Obs |
35 |
|
| Pa first |
32 |
|
Pa last |
20.9 |
|
P.A. Now (θ) |
28.8° |
|
| Sep first |
0.2 |
|
Sep last |
0.157 |
|
Sep. Now (ρ) |
0.157" |
|
| Mag pri |
7.80 |
|
Mag sec |
7.90 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
A2V (white) |
|
| Pri motion ra |
+003 |
|
Sec motion ra |
|
|
| Pri motion dec |
-008 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 97881 |
|
Constellation |
Centaurus |
|
SAO |
202243 |
|
HIP |
54949 |
|
| Tycho2 |
7730-00265-1 |
|
Gaia DR2 |
5395792913188533632 |
|
HD |
97881 |
|
GC |
15468 |
|
| CD |
CD-38 7022 |
|
CP |
CP-38 4618 |
|
Distance |
471.7 |
|
Distance ly |
1538.69 |
|
ORBITAL ELEMENTS
| Period (P) | 95y | ± 4.5 |
Periastron (T) | 1988.4y | ± 1.5 |
Semi-major axis (a) | 0.1353a | ± 0.0161 |
| Eccentricity (e) | 0.52 | ± 0.06 |
Inclination (i) | 46.4° | ± 7.9 |
Longitude of periastron (ω) | 72.9° | ± 13.9 |
| Node (Ω) | 165.1° | ± 11.5 |
Notes | n | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
343.6 |
0.114 |
| 2001 |
346.6 |
0.119 |
| 2002 |
349.4 |
0.124 |
| 2003 |
351.9 |
0.128 |
| 2004 |
354.4 |
0.132 |
| 2005 |
356.6 |
0.136 |
| 2006 |
358.8 |
0.139 |
| 2007 |
0.9 |
0.142 |
| 2008 |
2.9 |
0.144 |
| 2009 |
4.8 |
0.146 |
| 2010 |
6.7 |
0.149 |
| 2011 |
8.5 |
0.150 |
| 2012 |
10.3 |
0.152 |
| 2013 |
12.1 |
0.153 |
| 2014 |
13.8 |
0.154 |
| 2015 |
15.5 |
0.155 |
| 2016 |
17.2 |
0.156 |
| 2017 |
18.9 |
0.157 |
| 2018 |
20.5 |
0.157 |
| 2019 |
22.2 |
0.157 |
| 2020 |
23.8 |
0.158 |
| 2021 |
25.5 |
0.158 |
| 2022 |
27.1 |
0.158 |
| 2023 |
28.8 |
0.157 |
| 2024 |
30.4 |
0.157 |
| 2025 |
32.1 |
0.157 |
| 2026 |
33.7 |
0.156 |
| 2027 |
35.4 |
0.156 |
| 2028 |
37.1 |
0.155 |
| 2029 |
38.8 |
0.155 |
| 2030 |
40.5 |
0.154 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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